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<title id="title">An Introduction to Electronics</title>
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<div id="main"><h1>Kirchoff's Laws</h1>
<p>Before exploring Kirchoff's laws it is naccesary to explain some definitions.</p>
<p>Consider the circuit below:</p>
<p class="centre">
<img alt="simple circuit" src="../resources/kir.jpg" /></p>
<p>BRANCH - part of the circuit connecting two NODES</p>
<p>NODE - the point where two or more branches meet</p>
<p>LOOP - closed path that formed by connecting branches</p>
<h2>Kirchoff's Current Law</h2>
<p>The algebraic sum of all current in the node is equal to zero. In other words the sum of all current that arrives into the node is equal to the sum of current that leaves the node.</p>
<p class="centre">
<img alt="Kirchoff&apos;s current law" src="../resources/kir_1.jpg" /> </p>
<p>Total current would be <img alt="equation" class="inline" src="http://bricefernandes.com/cgi-bin/mimetex.cgi?I=I_1-I_2+I_3-I_4-I_5=0"></img> or <img alt="equation" class="inline" src="http://bricefernandes.com/cgi-bin/mimetex.cgi?I_2+I_4=I_1+I_3+I_5"></img></p>
<h2>Kirchoff's Voltage Law</h2>
<p>The algebraic sum of all Voltages that are surrounded by the loop is equal to zero.</p>
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<img alt="Kirchoff&apos;s Voltage law" src="../resources/kir_2.jpg" /></p></div>

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